diff --git a/build.py b/build.py
index 4d51de14e..98d105c92 100755
--- a/build.py
+++ b/build.py
@@ -223,6 +223,7 @@ class Gen_compressed(threading.Thread):
         ("output_info", "warnings"),
         ("output_info", "errors"),
         ("output_info", "statistics"),
+        ("warning_level", "DEFAULT"),
       ]
 
     # Read in all the source files.
@@ -251,6 +252,7 @@ class Gen_compressed(threading.Thread):
         ("output_info", "warnings"),
         ("output_info", "errors"),
         ("output_info", "statistics"),
+        ("warning_level", "DEFAULT"),
       ]
 
     # Read in all the source files.
@@ -277,6 +279,7 @@ class Gen_compressed(threading.Thread):
         ("output_info", "warnings"),
         ("output_info", "errors"),
         ("output_info", "statistics"),
+        ("warning_level", "DEFAULT"),
       ]
 
     # Read in all the source files.
@@ -303,6 +306,7 @@ class Gen_compressed(threading.Thread):
         ("output_info", "warnings"),
         ("output_info", "errors"),
         ("output_info", "statistics"),
+        ("warning_level", "DEFAULT"),
       ]
 
     # Read in all the source files.